CA2055033C - A surgical instrument forming a trocar - Google Patents
A surgical instrument forming a trocar Download PDFInfo
- Publication number
- CA2055033C CA2055033C CA002055033A CA2055033A CA2055033C CA 2055033 C CA2055033 C CA 2055033C CA 002055033 A CA002055033 A CA 002055033A CA 2055033 A CA2055033 A CA 2055033A CA 2055033 C CA2055033 C CA 2055033C
- Authority
- CA
- Canada
- Prior art keywords
- cannula
- needle
- hollow needle
- surgical instrument
- trigger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B2017/347—Locking means, e.g. for locking instrument in cannula
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Saccharide Compounds (AREA)
- Materials For Medical Uses (AREA)
Abstract
A surgical instrument of the trocar type, comprising a cannula, a needle engaged in the cannula, and manually controlled locking means suitable for selectively locking the needle in translation relative to the cannula.
Description
A SURGICAL INSTRUMENT FORMING A TROCAR
BACKGROUND OF THE INVENTION
The present invention relates to the field of s surgical instruments.
A main object of the present invention is to provide a novel surgical instrument of the trocar type suitable for performing punctures, in particular for withdrawing or injecting fluid, or for inserting a catheter.
~o SUMMARY OF THE INVENTION
According to the present invention, this main object is achieved by a surgical instrument comprising a cannula, a hollow, sharp-pointed needle engaged in the cannula, and is manually controlled locking means suitable for selectively locking the needle in translation relative to the cannula.
According to another advantageous feature of the present invention, the manually controlled locking means are designed to define two locking positions between the needle zo and the cannula: a rest first position in which the sharp point of the needle is located inside the cannula, and a working second position in which the sharp point of the needle is located outside the cannula.
According to another advantageous feature of the 2s present invention, the manually controlled locking means comprise a trigger pivoted on the cannula and designed to engage at least one catch formed on the outside surface of the needle.
According to another advantageous feature of the 3o present invention, the needle is urged towards its rest position by a resilient member.
According to another advantageous feature of the present invention, a sliding rod is provided in the lumen of the hollow needle.
- la -In accordance with the above features, from a broad aspect, the present invention relates to a surgical instrument of the trocar type. The instrument comprises a cannula having a longitudinal internal lumen centered on a s longitudinal axis. The cannula has a first end which is rounded to avoid injuring tissue and second end provided with handle means. A hollow needle is engaged in the lumen of the cannula. The needle has a longitudinal channel, a first sharp-pointed end adjacent to the first end of the ~o cannula and a second end which is adjacent to the second end of the cannula and outside the second end of the cannula.
The second end of the needle has an abutment of larger diameter than the diameter of the cannula lumen. The hollow needle has furthermore an outside longitudinal surface provided with two longitudinally spaced recessed catches.
Manually controlled locking means is also provided and comprises a trigger pivoted on the cannula about an axis that extends transversely to the longitudinal axis of the cannula to selectively engage the recessed catches provided zo in the outside surface of the hollow needle in order to selectively lock the needle in translation relative to the cannula in two locking positions: a first rest position in which the firstsharp-pointed end of the needle is located inside the cannula, and a second working position in which zs the first sharp-pointed end of the needle is located outside of the cannula. A resilient helical spring is engaged between the second end of the cannula and the abutment provided at the second end of the hollow needle, so as to urge the needle towards its rest position relative to the 3o cannula.
- lb -BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention are described by way of example with reference to the accompanying drawings, in which:
s Figure 1 is a diagrammatic longitudinal axial section view through a surgical instrument of the present invention in its rest position;
~0~~, Figure 2 is a similar longitudinal axial section through the same surgical instrument, but in its working position;
Figure 3 is a similar longitudinal axial section view through the same surgical instrument, but in an intermediate position between its above-mentioned rest position and working position; and Figure 4 is a diagrammatic longitudinal axial section through a cannula from a variant embodiment of the present invention.
DETAILED DESCRIPTION
Accompanying Figures 1 to 3 show a surgical instrument comprising a cannula 10, a sharp-pointed needle 30, and manually controlled locking means 50.
The longitudinal internal lumen of the cannula 10 is referenced 12. This lumen is centered on the longitudinal axis 11 of the cannula.
The proximal end 14 of the cannula is rounded to avoid injuring tissue.
The distal end 16 of the cannula 10 is provided with handle means 18. There are numerous possible ways in which the handle means 18 may be embodied. For example, they may comprise at least one finger 18 projecting from the outside surface 19 of the cannula transversely to the axis 11, or a collar projecting from the outside surface 19 of the cannula 10 and centered on the axis 11.
As used herein, the convention concerning the terms "proximal" and "distal" relates to being near or far from the site at which surgery is being performed. The active part of the instrument is said to be at its "proximal" end, the part held by the surgeon is said to be at its "distal" end.
The locking means 50 suitable for preventing the needle 30 from moving in translation relative to the cannula 10 are provided at the distal end 16 of the cannula 10.
The needle 30 is engaged in the lumen 12 of the cannula 10. The proximal end 31 of the needle 30 is a tapering end.
The proximal end 31 of the needle 30 is preferably delimited by a face 32 that slopes relative to the axis 11. The face 32 thus defines a sharp point 33 at the proximal end 31 of the needle.
The distal end 34 of the needle is provided with a disk 35 of larger diameter.
In the particular embodiment shown in Figures 1 to 3, and presently considered as being the preferred embodiment, the manually controlled locking means comprise a trigger 51 suitable for engaging in catches formed in the outside surface 36 of the needle.
More precisely, the trigger is pivoted on the cannula 10 about an axis 52 that extends transversely to the longitudinal axis 11 of the cannula.
The trigger 51 may be pivoted about the axis 52 by means of a stub axle engaged in a fork formed in the body of the cannula 10.
The body of the trigger 51 extends beyond the axis 52 towards the axis 11 in the form of a finger 53. The finger is designed to be engaged in one or other of two hollow catches referenced 40 and 41 and formed in the outside surface 36 of the needle 30.
The two catches 40 and 41 are axially spaced apart. More precisely, the positions of the two catches 40 and 41 are such that when the finger 53 of the trigger 51 is engaged in the catch 40 that is closer to the proximal end 31 of the needle 30, then the sharp point 33 of the needle is withdrawn inside.
the cannula 10. In contrast, when the finger 53 is placed in the second catch 41 closer to the distal end 34 of the needle 30, as shown in Figure 2, then the sharp point 33 of the needle 30 projects considerably beyond the proximal end 14 of the cannula 10.
The needle 30 is preferably urged towards its rest position shown in Figure 1 by a resilient member.
This resilient member is preferably constituted by a helical spring 70 engaged on the needle 30 between the disk 35 provided at the distal end of the needle and the face 20 extending transversely to the axis 11 and delimiting the distal end 16 of the cannula 10.
BACKGROUND OF THE INVENTION
The present invention relates to the field of s surgical instruments.
A main object of the present invention is to provide a novel surgical instrument of the trocar type suitable for performing punctures, in particular for withdrawing or injecting fluid, or for inserting a catheter.
~o SUMMARY OF THE INVENTION
According to the present invention, this main object is achieved by a surgical instrument comprising a cannula, a hollow, sharp-pointed needle engaged in the cannula, and is manually controlled locking means suitable for selectively locking the needle in translation relative to the cannula.
According to another advantageous feature of the present invention, the manually controlled locking means are designed to define two locking positions between the needle zo and the cannula: a rest first position in which the sharp point of the needle is located inside the cannula, and a working second position in which the sharp point of the needle is located outside the cannula.
According to another advantageous feature of the 2s present invention, the manually controlled locking means comprise a trigger pivoted on the cannula and designed to engage at least one catch formed on the outside surface of the needle.
According to another advantageous feature of the 3o present invention, the needle is urged towards its rest position by a resilient member.
According to another advantageous feature of the present invention, a sliding rod is provided in the lumen of the hollow needle.
- la -In accordance with the above features, from a broad aspect, the present invention relates to a surgical instrument of the trocar type. The instrument comprises a cannula having a longitudinal internal lumen centered on a s longitudinal axis. The cannula has a first end which is rounded to avoid injuring tissue and second end provided with handle means. A hollow needle is engaged in the lumen of the cannula. The needle has a longitudinal channel, a first sharp-pointed end adjacent to the first end of the ~o cannula and a second end which is adjacent to the second end of the cannula and outside the second end of the cannula.
The second end of the needle has an abutment of larger diameter than the diameter of the cannula lumen. The hollow needle has furthermore an outside longitudinal surface provided with two longitudinally spaced recessed catches.
Manually controlled locking means is also provided and comprises a trigger pivoted on the cannula about an axis that extends transversely to the longitudinal axis of the cannula to selectively engage the recessed catches provided zo in the outside surface of the hollow needle in order to selectively lock the needle in translation relative to the cannula in two locking positions: a first rest position in which the firstsharp-pointed end of the needle is located inside the cannula, and a second working position in which zs the first sharp-pointed end of the needle is located outside of the cannula. A resilient helical spring is engaged between the second end of the cannula and the abutment provided at the second end of the hollow needle, so as to urge the needle towards its rest position relative to the 3o cannula.
- lb -BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention are described by way of example with reference to the accompanying drawings, in which:
s Figure 1 is a diagrammatic longitudinal axial section view through a surgical instrument of the present invention in its rest position;
~0~~, Figure 2 is a similar longitudinal axial section through the same surgical instrument, but in its working position;
Figure 3 is a similar longitudinal axial section view through the same surgical instrument, but in an intermediate position between its above-mentioned rest position and working position; and Figure 4 is a diagrammatic longitudinal axial section through a cannula from a variant embodiment of the present invention.
DETAILED DESCRIPTION
Accompanying Figures 1 to 3 show a surgical instrument comprising a cannula 10, a sharp-pointed needle 30, and manually controlled locking means 50.
The longitudinal internal lumen of the cannula 10 is referenced 12. This lumen is centered on the longitudinal axis 11 of the cannula.
The proximal end 14 of the cannula is rounded to avoid injuring tissue.
The distal end 16 of the cannula 10 is provided with handle means 18. There are numerous possible ways in which the handle means 18 may be embodied. For example, they may comprise at least one finger 18 projecting from the outside surface 19 of the cannula transversely to the axis 11, or a collar projecting from the outside surface 19 of the cannula 10 and centered on the axis 11.
As used herein, the convention concerning the terms "proximal" and "distal" relates to being near or far from the site at which surgery is being performed. The active part of the instrument is said to be at its "proximal" end, the part held by the surgeon is said to be at its "distal" end.
The locking means 50 suitable for preventing the needle 30 from moving in translation relative to the cannula 10 are provided at the distal end 16 of the cannula 10.
The needle 30 is engaged in the lumen 12 of the cannula 10. The proximal end 31 of the needle 30 is a tapering end.
The proximal end 31 of the needle 30 is preferably delimited by a face 32 that slopes relative to the axis 11. The face 32 thus defines a sharp point 33 at the proximal end 31 of the needle.
The distal end 34 of the needle is provided with a disk 35 of larger diameter.
In the particular embodiment shown in Figures 1 to 3, and presently considered as being the preferred embodiment, the manually controlled locking means comprise a trigger 51 suitable for engaging in catches formed in the outside surface 36 of the needle.
More precisely, the trigger is pivoted on the cannula 10 about an axis 52 that extends transversely to the longitudinal axis 11 of the cannula.
The trigger 51 may be pivoted about the axis 52 by means of a stub axle engaged in a fork formed in the body of the cannula 10.
The body of the trigger 51 extends beyond the axis 52 towards the axis 11 in the form of a finger 53. The finger is designed to be engaged in one or other of two hollow catches referenced 40 and 41 and formed in the outside surface 36 of the needle 30.
The two catches 40 and 41 are axially spaced apart. More precisely, the positions of the two catches 40 and 41 are such that when the finger 53 of the trigger 51 is engaged in the catch 40 that is closer to the proximal end 31 of the needle 30, then the sharp point 33 of the needle is withdrawn inside.
the cannula 10. In contrast, when the finger 53 is placed in the second catch 41 closer to the distal end 34 of the needle 30, as shown in Figure 2, then the sharp point 33 of the needle 30 projects considerably beyond the proximal end 14 of the cannula 10.
The needle 30 is preferably urged towards its rest position shown in Figure 1 by a resilient member.
This resilient member is preferably constituted by a helical spring 70 engaged on the needle 30 between the disk 35 provided at the distal end of the needle and the face 20 extending transversely to the axis 11 and delimiting the distal end 16 of the cannula 10.
As shown in the accompanying figures, the needle 30 is hollow and has a longitudinal channel referenced 37 passing therealong. A rod or mandrel 80 may be engaged temporarily inside the channel 37 of the needle 30 to close the channel.
To enable the needle 80 to be withdrawn, the distal end 81 thereof is provided with a knurled head 82, or with any equivalent means.
It is also preferable for the proximal end 83 of the needle to be chamfered so that the face 32 of the needle's sharp point is filled in without discontinuity.
As shown in Figure 1, and as mentioned above, when the finger 53 of the trigger 51 is engaged in the catch 40 of the needle 30 closer to the proximal end thereof, the needle 30 is prevented from moving in translation relative to the cannula in a rest position such that the sharp point 33 of the needle 30 is withdrawn inside the cannula 10. In this rest position as shown in Figure 1, the surgical instrument may be moved close to tissue, or inserted into a cavity such as the abdominal cavity, without any risk of injury or trauma for the surrounding tissues or organs.
To enable the needle 30 to be used, it suffices merely to pull the trigger 50 so that the finger 53 disengages the catch 40, as shown in Figure 3. The needle 30 can then be displaced freely in translation relative to the cannula 10. If the surgeon so desires, the needle 30 can be locked in its position projecting from the cannula 10 by engaging the finger 53 in the second catch 41. The working position obtained in this way is shown in Figure 2. In this position, the sharp point 33 of the needle projects well clear from the proximal end 14 of the cannula 10.
This working position may be used to perfom~ injections via the channel 37 of the needle 30, or to withdraw fluid via the same channel 37, or else to insert a catheter via the channel 37.
When the trigger 51 is released, the spring 70 returns the needle 30 to its rest position as shown in Figure 1. Once the needle has been withdrawn into the cannula 10, the instrument i... ~' l.r i ~~~~~~~3 can be withdrawn without any risk of damaging surrounding tissues.
In the intermediate state shown in Figure 3 between the rest position of Figure 1 and the working position of Figure 2, the needle 30 can be moved freely in translation backwards or forwards relative to the cannula 10. In this state, the needle 30 may be used, for example, to perform punctures.
Naturally, when the channel 37 of the needle 30 is used for performing injections, taking samples, or inserting a catheter, the needle 80 must be withdrawn.
Naturally, 'the present invention is not limited to the particular embodiment described above, but extends to any variant coming within the spirit of the invention.
In particular, the structure of the manually controlled locking means 50 may be subject to numerous variants.
Where applicable, the cannula 30 may be provided with means that prevent the trigger 51 from rotating anticlockwise from its radial position relative to the axis 11 as shown in Figures 1 and 2. In this case, the needle 30 cannot be re-turned from its working position to its rest position by the spring 70 when the trigger 51 is released by the user. It is then necessary to urge the needle 30 forwards a little in order to allow the finger 53 to be withdrawn by rotating the trigger 51 clockwise so as to allow the needle to be returned to its rest position by the spring 70. Such means preventing the trigger 5I from rotating anticlockwise from the radial position shown in Figures 1 and 2 may be constituted by abutments level with the fork carrying the pivoted trigger 51. Such means are shown diagrammatically in the form of an abutment 22 in Figure 4.
The accompanying figures are naturally diagrammatic. In particular, the relative dimensions of the cannula 10, the needle 30, and the locking means 50 all of which are shown diagrammatically, are not limiting in any way.
In it also possible to envisage providing more than two catches 40, 41 in the needle 30, thereby defining more than two stable positions for the needle 30 relative to the cannula 10.
Such a disposition makes it possible to accurately control the extent to which the needle 30 is extended relative to the cannula 10.
In addition, the trigger 51 may be associated with resilient means urging it towards its radial position relative to the axis 11, as shown in Figures 1 and 2, in which the locking finger 53 penetrates into a catch 40 or 41 of the needle. Such resilient means may be formed, for example, by a helical spring engaged about the pivot axis 52 and having its ends respectively engaging the cannula 10 and the trigger 51.
To enable the needle 80 to be withdrawn, the distal end 81 thereof is provided with a knurled head 82, or with any equivalent means.
It is also preferable for the proximal end 83 of the needle to be chamfered so that the face 32 of the needle's sharp point is filled in without discontinuity.
As shown in Figure 1, and as mentioned above, when the finger 53 of the trigger 51 is engaged in the catch 40 of the needle 30 closer to the proximal end thereof, the needle 30 is prevented from moving in translation relative to the cannula in a rest position such that the sharp point 33 of the needle 30 is withdrawn inside the cannula 10. In this rest position as shown in Figure 1, the surgical instrument may be moved close to tissue, or inserted into a cavity such as the abdominal cavity, without any risk of injury or trauma for the surrounding tissues or organs.
To enable the needle 30 to be used, it suffices merely to pull the trigger 50 so that the finger 53 disengages the catch 40, as shown in Figure 3. The needle 30 can then be displaced freely in translation relative to the cannula 10. If the surgeon so desires, the needle 30 can be locked in its position projecting from the cannula 10 by engaging the finger 53 in the second catch 41. The working position obtained in this way is shown in Figure 2. In this position, the sharp point 33 of the needle projects well clear from the proximal end 14 of the cannula 10.
This working position may be used to perfom~ injections via the channel 37 of the needle 30, or to withdraw fluid via the same channel 37, or else to insert a catheter via the channel 37.
When the trigger 51 is released, the spring 70 returns the needle 30 to its rest position as shown in Figure 1. Once the needle has been withdrawn into the cannula 10, the instrument i... ~' l.r i ~~~~~~~3 can be withdrawn without any risk of damaging surrounding tissues.
In the intermediate state shown in Figure 3 between the rest position of Figure 1 and the working position of Figure 2, the needle 30 can be moved freely in translation backwards or forwards relative to the cannula 10. In this state, the needle 30 may be used, for example, to perform punctures.
Naturally, when the channel 37 of the needle 30 is used for performing injections, taking samples, or inserting a catheter, the needle 80 must be withdrawn.
Naturally, 'the present invention is not limited to the particular embodiment described above, but extends to any variant coming within the spirit of the invention.
In particular, the structure of the manually controlled locking means 50 may be subject to numerous variants.
Where applicable, the cannula 30 may be provided with means that prevent the trigger 51 from rotating anticlockwise from its radial position relative to the axis 11 as shown in Figures 1 and 2. In this case, the needle 30 cannot be re-turned from its working position to its rest position by the spring 70 when the trigger 51 is released by the user. It is then necessary to urge the needle 30 forwards a little in order to allow the finger 53 to be withdrawn by rotating the trigger 51 clockwise so as to allow the needle to be returned to its rest position by the spring 70. Such means preventing the trigger 5I from rotating anticlockwise from the radial position shown in Figures 1 and 2 may be constituted by abutments level with the fork carrying the pivoted trigger 51. Such means are shown diagrammatically in the form of an abutment 22 in Figure 4.
The accompanying figures are naturally diagrammatic. In particular, the relative dimensions of the cannula 10, the needle 30, and the locking means 50 all of which are shown diagrammatically, are not limiting in any way.
In it also possible to envisage providing more than two catches 40, 41 in the needle 30, thereby defining more than two stable positions for the needle 30 relative to the cannula 10.
Such a disposition makes it possible to accurately control the extent to which the needle 30 is extended relative to the cannula 10.
In addition, the trigger 51 may be associated with resilient means urging it towards its radial position relative to the axis 11, as shown in Figures 1 and 2, in which the locking finger 53 penetrates into a catch 40 or 41 of the needle. Such resilient means may be formed, for example, by a helical spring engaged about the pivot axis 52 and having its ends respectively engaging the cannula 10 and the trigger 51.
Claims (4)
1. A surgical instrument of the trocar type, comprising:
a cannula having a longitudinal internal lumen centered on a longitudinal axis, said cannula having a first end which is rounded to avoid injuring tissue and second end provided with handle means;
a hollow needle engaged in said lumen of the cannula, said needle having a longitudinal channel, a first sharp-pointed end adjacent to said first end of the cannula and a second end which is adjacent to said second end of the cannula and outside the second end of the cannula, the second end of the needle having an abutment of larger diameter than the diameter of the cannula lumen, said hollow needle having furthermore an outside longitudinal surface provided with two longitudinally spaced recessed catches;
manually controlled locking means comprising a trigger pivoted on the cannula about an axis that extends transversely to the longitudinal axis of the cannula to selectively engage said recessed catches provided in the outside surface of the hollow needle in order to selectively lock the needle in translation relative to the cannula in two locking positions: a first rest position in which the first sharp-pointed end of the needle is located inside the cannula and a second working position in which the first sharp-pointed end of the needle is located outside of the cannula; and, a resilient helical spring engaged between the second end of the cannula and the abutment provided at the second end of said hollow needle, so as to urge the needle towards its rest position relative to the cannula.
a cannula having a longitudinal internal lumen centered on a longitudinal axis, said cannula having a first end which is rounded to avoid injuring tissue and second end provided with handle means;
a hollow needle engaged in said lumen of the cannula, said needle having a longitudinal channel, a first sharp-pointed end adjacent to said first end of the cannula and a second end which is adjacent to said second end of the cannula and outside the second end of the cannula, the second end of the needle having an abutment of larger diameter than the diameter of the cannula lumen, said hollow needle having furthermore an outside longitudinal surface provided with two longitudinally spaced recessed catches;
manually controlled locking means comprising a trigger pivoted on the cannula about an axis that extends transversely to the longitudinal axis of the cannula to selectively engage said recessed catches provided in the outside surface of the hollow needle in order to selectively lock the needle in translation relative to the cannula in two locking positions: a first rest position in which the first sharp-pointed end of the needle is located inside the cannula and a second working position in which the first sharp-pointed end of the needle is located outside of the cannula; and, a resilient helical spring engaged between the second end of the cannula and the abutment provided at the second end of said hollow needle, so as to urge the needle towards its rest position relative to the cannula.
2. The instrument of claim 1 further comprising a removable rod slidably engaged in the channel of said hollow needle, said rod having a first end adjacent said second end of the hollow needle, which is provided with a knurled head, and a second end which is chamfered so as to flush up without discontinuity the first sharp-pointed end of the hollow needle when the knurled head of the removable rod rests on said second end of the hollow needle, so as to close selectively said channel of the needle.
3. The surgical instrument according to claim 1 wherein the cannula comprises means that limit rotation of said trigger.
4. The surgical instrument according to claim 1 further comprising resilient means urging the trigger in a radical position relative to the longitudinal axis of the cannula.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR13713 | 1990-11-06 | ||
| FR9013713A FR2668698B1 (en) | 1990-11-06 | 1990-11-06 | SURGICAL INSTRUMENT FORMING TROCART. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2055033A1 CA2055033A1 (en) | 1992-05-07 |
| CA2055033C true CA2055033C (en) | 2001-10-16 |
Family
ID=9401879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002055033A Expired - Lifetime CA2055033C (en) | 1990-11-06 | 1991-11-06 | A surgical instrument forming a trocar |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5242427A (en) |
| EP (1) | EP0485280B1 (en) |
| AT (1) | ATE137946T1 (en) |
| AU (1) | AU649279B2 (en) |
| CA (1) | CA2055033C (en) |
| DE (1) | DE69119545T2 (en) |
| DK (1) | DK0485280T5 (en) |
| ES (1) | ES2087983T3 (en) |
| FR (1) | FR2668698B1 (en) |
| GR (1) | GR3020685T3 (en) |
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| US5295993A (en) * | 1991-04-30 | 1994-03-22 | United States Surgical Corporation | Safety trocar |
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| US5334199A (en) * | 1992-08-17 | 1994-08-02 | Inbae Yoon | Ligating instrument and methods of ligating tissue in endoscopic operative procedures |
| US5356421A (en) * | 1992-10-07 | 1994-10-18 | United States Surgical Corporation | Safety trocar with locking handles |
| US6036699A (en) * | 1992-12-10 | 2000-03-14 | Perclose, Inc. | Device and method for suturing tissue |
| US20020095164A1 (en) | 1997-06-26 | 2002-07-18 | Andreas Bernard H. | Device and method for suturing tissue |
| US6355050B1 (en) | 1992-12-10 | 2002-03-12 | Abbott Laboratories | Device and method for suturing tissue |
| JP3180219B2 (en) * | 1993-07-09 | 2001-06-25 | ニプロ株式会社 | Trocar |
| CA2124651C (en) * | 1993-08-20 | 2004-09-28 | David T. Green | Apparatus and method for applying and adjusting an anchoring device |
| US5722981A (en) * | 1993-10-08 | 1998-03-03 | Tahoe Surgical Instruments | Double needle ligature device |
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| US5472427A (en) * | 1993-10-22 | 1995-12-05 | Rammler; David H. | Trocar device |
| US5527322A (en) | 1993-11-08 | 1996-06-18 | Perclose, Inc. | Device and method for suturing of internal puncture sites |
| US5409462A (en) * | 1993-12-30 | 1995-04-25 | Cordis Corporation | Cyst puncture catheter assembly |
| US5573542A (en) * | 1994-08-17 | 1996-11-12 | Tahoe Surgical Instruments-Puerto Rico | Endoscopic suture placement tool |
| US5651771A (en) * | 1994-11-07 | 1997-07-29 | Applied Medical Resources Corporation | Adjustable surgical clamp |
| US5569291A (en) * | 1995-02-01 | 1996-10-29 | Ethicon Endo-Surgery, Inc. | Surgical penetration and dissection instrument |
| US5772678A (en) * | 1995-10-20 | 1998-06-30 | Inlet Medical, Inc. | Retractable disposable tip reusable trocar obturator |
| US5792112A (en) * | 1995-10-20 | 1998-08-11 | Applied Medical Resources Corporation | Trocar with electrical discharge path |
| US5674237A (en) * | 1996-03-06 | 1997-10-07 | Ott; Henryk | Safety trocar |
| US5681323A (en) * | 1996-07-15 | 1997-10-28 | Arick; Daniel S. | Emergency cricothyrotomy tube insertion |
| US5785689A (en) * | 1996-07-18 | 1998-07-28 | Act Medical, Inc. | Endoscopic catheter sheath position control |
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-
1990
- 1990-11-06 FR FR9013713A patent/FR2668698B1/en not_active Expired - Lifetime
-
1991
- 1991-11-04 US US07/787,497 patent/US5242427A/en not_active Expired - Lifetime
- 1991-11-06 DK DK91402968.1T patent/DK0485280T5/en active
- 1991-11-06 EP EP91402968A patent/EP0485280B1/en not_active Expired - Lifetime
- 1991-11-06 AU AU87063/91A patent/AU649279B2/en not_active Expired
- 1991-11-06 ES ES91402968T patent/ES2087983T3/en not_active Expired - Lifetime
- 1991-11-06 CA CA002055033A patent/CA2055033C/en not_active Expired - Lifetime
- 1991-11-06 AT AT91402968T patent/ATE137946T1/en not_active IP Right Cessation
- 1991-11-06 DE DE69119545T patent/DE69119545T2/en not_active Expired - Lifetime
-
1996
- 1996-07-31 GR GR960402043T patent/GR3020685T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2668698B1 (en) | 1997-06-06 |
| EP0485280B1 (en) | 1996-05-15 |
| FR2668698A1 (en) | 1992-05-07 |
| CA2055033A1 (en) | 1992-05-07 |
| GR3020685T3 (en) | 1996-10-31 |
| AU649279B2 (en) | 1994-05-19 |
| DE69119545D1 (en) | 1996-06-20 |
| DE69119545T2 (en) | 1996-11-21 |
| ES2087983T3 (en) | 1996-08-01 |
| ATE137946T1 (en) | 1996-06-15 |
| DK0485280T5 (en) | 1996-12-23 |
| AU8706391A (en) | 1992-05-14 |
| US5242427A (en) | 1993-09-07 |
| EP0485280A1 (en) | 1992-05-13 |
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